Taco 1600 Series In-Line Pumps feature a replaceable, permanently-lubricated bearing cartridge. The exclusive 1600 cool-bearing cartridge design isolates the bearing from the effects of system temperatures to greatly extend bearing life. A standard bearing design also means that a single bearing cartridge can be used to service the entire line, making servicing a snap. Taco 1600 Series pumps are available in 15 models ranging in performance capacity from 10 GPM to 235 GPM with head capacities up to 68 ft.